Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aacb3614a6726e6…

MALICIOUS

PDF

49.3 KB Created: 2020-08-10 16:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3d947a993f24323d3e4be70c2624f43 SHA-1: 8b2d73b527888db341a1eca95ca75c30c3a3ea6c SHA-256: 0aacb3614a6726e6f01211ea7388e4d85dbeae1668452e19042070b455be5080
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=carrier+bag+theory+of+fiction+pdf`. Another heuristic flagged the document as a lure for an advance-fee scam, citing language related to lotteries, prizes, or parcel delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=carrier+bag+theory+of+fiction+pdf
    • http://files.capitalareamta.org/uploads/1/3/1/4/131453897/f3b72edb47ccf6.pdf
    • http://files.42sevenproductions.com/uploads/1/3/0/7/130774994/dijivamobonoro-fanusabogomuk-fuwegup.pdf
    • http://files.net4bags.com/uploads/1/3/1/8/131856034/48f5a0.pdf
    • http://duzeme.coloradoartclass.org/uploads/1/3/0/8/130873995/504baa2f2c.pdf
    • http://dufimeta.singramed621.com/uploads/1/3/1/6/131607163/9200737194.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/73967294501.pdf
    • https://cdn.shopify.com/s/files/1/0429/4996/8035/files/giputojak.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/ferupololokegokepewuwuluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuvinotagug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/30472659225.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/19447142337.pdf
    • https://cdn.shopify.com/s/files/1/0450/3810/8830/files/short_note_on_ganga_action_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/siwunes.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/zilalepukumibiduv.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/asme_bolt_standards.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/28233950846.pdf
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/faxajogafesuxid.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082ea.bin
668c52b67d39c3fd88a093be9a2ba662e406018b8b1f9fec41840b609325ed54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82EA 5352 bytes
font_01_sfnt_off00009521.bin
7a99ce21d7414f80c143d7bc95d61c43475be50640d4bdbda157774b170e94f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9521 10120 bytes

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